31403741618 has 8 divisors (see below), whose sum is σ = 48729943980. Its totient is φ = 15160426960.

The previous prime is 31403741569. The next prime is 31403741669. The reversal of 31403741618 is 81614730413.

It can be written as a sum of positive squares in 2 ways, for example, as 29733139489 + 1670602129 = 172433^2 + 40873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31403741618² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270721853 + ... + 270721968.

Almost surely, 2^31403741618 is an apocalyptic number.

31403741618 is a deficient number, since it is larger than the sum of its proper divisors (17326202362).

31403741618 is a wasteful number, since it uses less digits than its factorization.

31403741618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541443852.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 31403741618 in words is "thirty-one billion, four hundred three million, seven hundred forty-one thousand, six hundred eighteen".